In the first day of testimony in Weld District Court on Tuesday, a former Colorado Republican Party chairman accused of committing voter fraud blamed a diabetic blackout for his filling out his ex-wife’s ballot during the 2016 election. Steve Curtis, 57, who from 1997-99 served as chairman of the Colorado Republican Party, is charged with one count of voter fraud and one count of forgery after prosecutors say he filled out and mailed in the ballot of his ex-wife, Kelly Curtis, from his Firestone home in fall 2016. After a day of jury selection Monday, attorneys delivered their opening arguments in his trial at about 11 a.m. Tuesday, during which Curtis’ attorney, Christopher Gregory, told the jury Curtis has lived with Type 1 diabetes for about 30 years and he was prone to serious diabetic episodes. “He has a notoriously bad history of monitoring and controlling his blood sugar,” Gregory said.